You will need to know the YouTube ID of the video you want to use as well as the container DIV of your web page.
How to use:
Attach the jQuery to your webpage.
Load the tubular plugin. tubular must be called AFTER the previous two calls.
Call tubular on your BODY tag with the YouTube ID and your content container DIV as parameters.
$('body').tubular('someYTid','wrapper'); // where someYTid is the YouTube ID and wrapper is your containing DIV.